Telkim debiting my account even after canceling contract

I cancelled my Telkom contract online on the first of Feb 2019 I recieved two email after doing so with the following cancellation references 1. ********** 678 : ********** 7 2. ********** 927 : ********** 6

My Wifi was disconnected immediately however I still received an invoice towards end March stating that my account will be debited on the 31st. I called to inquire, a call center agent the promised to escalate the issue

Today is the 31 and Telkom has debited my account.

I have read countless reviews online about Telkom taking months to cancel customer contracts

Please help me